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I l Nu ITD STATS PATNT OFFICE.

CHARLES H. JOHNSON, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO C. H. JOHNSON AND J. G. HAMBLIN, OF SAME PLACE.

ARGAND GAS-BURNER.

Specification of Letters Patent No. 17,132, dated April 21, 1857.

To all whom t may concern:

Be it known that I, CHARLES H. JOHNSON, of Boston, in the county of Suffolk and State of Massachusetts, have invented a new and useful Improvement in Argand Burners; and I do hereby declare that the same is fully described and represented in' the following speciication and the accompanying drawings, of which- Figure 1, is a side elevation, Fig. 2, a vertical and central section of one of my improved burners, and Fig. 3, a horizontal section, taken through its air inlets.

In the said drawings, A, exhibits an Argand gas burner constructed so'as to have its cylindrical part or body, a, screw into the lower or bottom part, b, and be provided at some dist-ance above said bottom with a shoulder, o, extending around it as shown in the drawings. The said part a, has, below the said shoulder, a series of rectangular or other proper shaped openings or air inlets e, e, e, made through it. Corresponding `holes or passages cl, d, are formed within a tube C, which surrounds the outside of the burner, between the said shoulder and the bottom, b, and rests and turns freely on said bottom. This tube should vso fit to the burner as to be capable `of being freely turned around on the same ets, and the tube O, bodily, or together around the burner, the weight and friction of the globe on the brackets suflicing to cause the tube to revolve with the globe. It is well known that a too rapid internal current of air operates to depress the flame of an Argand burner and thereby diminish the light thereof. As the amount of light depends in a great measure on the height of the flame, it cannot fail to be observed how important it is to have connected with the burner, a means of regulating the admission of air to the inner surface of the flame. Constructing a burner with such an appliance is not however, new, nor does it constitute the subject of my invention. I therefore do not claim applying an air regulator or series of valves to theorifices for admit-ting air into the inner tube of an Argand burner; nor do I claim separately therefrom, supporting the globe and chimney brackets by a tube encompassing the burner or outside tube thereof, but

'Ihe improvement of constructing, the

ing either t-he globe or chimney when the friction thereof on the brackets may be sufcient for the purpose.

In testimony whereof, I have hereunto setmy signature.

CHARLES H. JOHNSON.

Witnesses:

It. H. EDDY, F. P. HALE, Jr. 

